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This recommended practice presents a number of tests for use in determining the significant parameters and performance characteristics of electronics transformers and inductors. These tests are designed primarily for transformers and inductors used in all types of electronics...
The scope of this document (Module A) covers requirements for Network Rail ' s 25 kV traction transformers and transformers used to derive auxiliary supplies from 25kV traction supplies. In addition to the general requirements of BS EN 50329 this module covers specific requirements...
This standard is intended to define the requirements for current transformers with a maximum of secondary output of 250 milliamperes. These requirements of ratios, Accuracy classes, burdens and test methods supplement but are not subordinate to IEEE C57.13™ Standard...
This standard is intended to defi ne the requirements for CTs with a maximum of secondary output of 250 mA. These requirements of ratios, accuracy classes, burdens, and test methods supplement but are not subordinate to IEEE C57.13. These transformers are for both indoor and outdoor...
The scope of this guide is to describe field test methods that assure current transformers (CTs) are connected properly, are of marked ratio and polarity, and are in a condition to perform as designed both initially and after being in service for a period of time. Annex A...
This part of IEC 60947 applies to the types of equipment listed in 1.1.1 and 1.1.2 whose main contacts are intended to be connected to circuits the rated voltage of which does not exceed 1 000 V a.c. or 1 500 V d.c. Starters and/or contactors dealt with in this standard are not normally designed to...
This part of IEC 60044 applies to newly manufactured current transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz. Although the requirements relate basically to transformers with separate windings, they...
This part of IEC 60044 applies to newly manufactured current transformers for use with electrical measuring instruments and electrical protective devices at frequencies from 15 Hz to 100 Hz. Although the requirements relate basically to transformers with separate windings, they...
PURPOSE The purpose of this procedure is to provide a model process for primary injection testing of feeder protection. The tests are intended to establish the integrity of the associated current transformers and their secondary connections. These tests are required to prove: The CTs...
This part of IEC 61000 provides guidance on principles which can be used as the basis for determining the requirements for the connection of unbalanced installations (i.e. three-phase installations causing voltage unbalance) to MV, HV and EHV public power systems (LV installations are covered in...